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9148e14c9d0773480edd8c6fbd2e0ed92d3036fd
[deliverable/linux.git] / drivers / media / common / siano / smsdvb-main.c
1 /****************************************************************
2
3 Siano Mobile Silicon, Inc.
4 MDTV receiver kernel modules.
5 Copyright (C) 2006-2008, Uri Shkolnik
6
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
19
20 ****************************************************************/
21
22 #include "smscoreapi.h"
23
24 #include <linux/module.h>
25 #include <linux/slab.h>
26 #include <linux/init.h>
27 #include <asm/div64.h>
28
29 #include "dmxdev.h"
30 #include "dvbdev.h"
31 #include "dvb_demux.h"
32 #include "dvb_frontend.h"
33
34 #include "sms-cards.h"
35
36 #include "smsdvb.h"
37
38 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
39
40 static struct list_head g_smsdvb_clients;
41 static struct mutex g_smsdvb_clientslock;
42
43 static u32 sms_to_guard_interval_table[] = {
44 [0] = GUARD_INTERVAL_1_32,
45 [1] = GUARD_INTERVAL_1_16,
46 [2] = GUARD_INTERVAL_1_8,
47 [3] = GUARD_INTERVAL_1_4,
48 };
49
50 static u32 sms_to_code_rate_table[] = {
51 [0] = FEC_1_2,
52 [1] = FEC_2_3,
53 [2] = FEC_3_4,
54 [3] = FEC_5_6,
55 [4] = FEC_7_8,
56 };
57
58
59 static u32 sms_to_hierarchy_table[] = {
60 [0] = HIERARCHY_NONE,
61 [1] = HIERARCHY_1,
62 [2] = HIERARCHY_2,
63 [3] = HIERARCHY_4,
64 };
65
66 static u32 sms_to_modulation_table[] = {
67 [0] = QPSK,
68 [1] = QAM_16,
69 [2] = QAM_64,
70 [3] = DQPSK,
71 };
72
73
74 /* Events that may come from DVB v3 adapter */
75 static void sms_board_dvb3_event(struct smsdvb_client_t *client,
76 enum SMS_DVB3_EVENTS event) {
77
78 struct smscore_device_t *coredev = client->coredev;
79 switch (event) {
80 case DVB3_EVENT_INIT:
81 pr_debug("DVB3_EVENT_INIT\n");
82 sms_board_event(coredev, BOARD_EVENT_BIND);
83 break;
84 case DVB3_EVENT_SLEEP:
85 pr_debug("DVB3_EVENT_SLEEP\n");
86 sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
87 break;
88 case DVB3_EVENT_HOTPLUG:
89 pr_debug("DVB3_EVENT_HOTPLUG\n");
90 sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
91 break;
92 case DVB3_EVENT_FE_LOCK:
93 if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
94 client->event_fe_state = DVB3_EVENT_FE_LOCK;
95 pr_debug("DVB3_EVENT_FE_LOCK\n");
96 sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
97 }
98 break;
99 case DVB3_EVENT_FE_UNLOCK:
100 if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
101 client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
102 pr_debug("DVB3_EVENT_FE_UNLOCK\n");
103 sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
104 }
105 break;
106 case DVB3_EVENT_UNC_OK:
107 if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
108 client->event_unc_state = DVB3_EVENT_UNC_OK;
109 pr_debug("DVB3_EVENT_UNC_OK\n");
110 sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
111 }
112 break;
113 case DVB3_EVENT_UNC_ERR:
114 if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
115 client->event_unc_state = DVB3_EVENT_UNC_ERR;
116 pr_debug("DVB3_EVENT_UNC_ERR\n");
117 sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
118 }
119 break;
120
121 default:
122 pr_err("Unknown dvb3 api event\n");
123 break;
124 }
125 }
126
127 static void smsdvb_stats_not_ready(struct dvb_frontend *fe)
128 {
129 struct smsdvb_client_t *client =
130 container_of(fe, struct smsdvb_client_t, frontend);
131 struct smscore_device_t *coredev = client->coredev;
132 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
133 int i, n_layers;
134
135 switch (smscore_get_device_mode(coredev)) {
136 case DEVICE_MODE_ISDBT:
137 case DEVICE_MODE_ISDBT_BDA:
138 n_layers = 4;
139 break;
140 default:
141 n_layers = 1;
142 }
143
144 /* Global stats */
145 c->strength.len = 1;
146 c->cnr.len = 1;
147 c->strength.stat[0].scale = FE_SCALE_DECIBEL;
148 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
149
150 /* Per-layer stats */
151 c->post_bit_error.len = n_layers;
152 c->post_bit_count.len = n_layers;
153 c->block_error.len = n_layers;
154 c->block_count.len = n_layers;
155
156 /*
157 * Put all of them at FE_SCALE_NOT_AVAILABLE. They're dynamically
158 * changed when the stats become available.
159 */
160 for (i = 0; i < n_layers; i++) {
161 c->post_bit_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
162 c->post_bit_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
163 c->block_error.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
164 c->block_count.stat[i].scale = FE_SCALE_NOT_AVAILABLE;
165 }
166 }
167
168 static inline int sms_to_mode(u32 mode)
169 {
170 switch (mode) {
171 case 2:
172 return TRANSMISSION_MODE_2K;
173 case 4:
174 return TRANSMISSION_MODE_4K;
175 case 8:
176 return TRANSMISSION_MODE_8K;
177 }
178 return TRANSMISSION_MODE_AUTO;
179 }
180
181 static inline int sms_to_status(u32 is_demod_locked, u32 is_rf_locked)
182 {
183 if (is_demod_locked)
184 return FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
185 FE_HAS_SYNC | FE_HAS_LOCK;
186
187 if (is_rf_locked)
188 return FE_HAS_SIGNAL | FE_HAS_CARRIER;
189
190 return 0;
191 }
192
193 static inline u32 sms_to_bw(u32 value)
194 {
195 return value * 1000000;
196 }
197
198 #define convert_from_table(value, table, defval) ({ \
199 u32 __ret; \
200 if (value < ARRAY_SIZE(table)) \
201 __ret = table[value]; \
202 else \
203 __ret = defval; \
204 __ret; \
205 })
206
207 #define sms_to_guard_interval(value) \
208 convert_from_table(value, sms_to_guard_interval_table, \
209 GUARD_INTERVAL_AUTO);
210
211 #define sms_to_code_rate(value) \
212 convert_from_table(value, sms_to_code_rate_table, \
213 FEC_NONE);
214
215 #define sms_to_hierarchy(value) \
216 convert_from_table(value, sms_to_hierarchy_table, \
217 FEC_NONE);
218
219 #define sms_to_modulation(value) \
220 convert_from_table(value, sms_to_modulation_table, \
221 FEC_NONE);
222
223 static void smsdvb_update_tx_params(struct smsdvb_client_t *client,
224 struct sms_tx_stats *p)
225 {
226 struct dvb_frontend *fe = &client->frontend;
227 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
228
229 c->frequency = p->frequency;
230 client->fe_status = sms_to_status(p->is_demod_locked, 0);
231 c->bandwidth_hz = sms_to_bw(p->bandwidth);
232 c->transmission_mode = sms_to_mode(p->transmission_mode);
233 c->guard_interval = sms_to_guard_interval(p->guard_interval);
234 c->code_rate_HP = sms_to_code_rate(p->code_rate);
235 c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
236 c->hierarchy = sms_to_hierarchy(p->hierarchy);
237 c->modulation = sms_to_modulation(p->constellation);
238 }
239
240 static void smsdvb_update_per_slices(struct smsdvb_client_t *client,
241 struct RECEPTION_STATISTICS_PER_SLICES_S *p)
242 {
243 struct dvb_frontend *fe = &client->frontend;
244 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
245 u64 tmp;
246
247 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
248 c->modulation = sms_to_modulation(p->constellation);
249
250 /* signal Strength, in DBm */
251 c->strength.stat[0].uvalue = p->in_band_power * 1000;
252
253 /* Carrier to noise ratio, in DB */
254 c->cnr.stat[0].svalue = p->snr * 1000;
255
256 /* PER/BER requires demod lock */
257 if (!p->is_demod_locked)
258 return;
259
260 /* TS PER */
261 client->last_per = c->block_error.stat[0].uvalue;
262 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
263 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
264 c->block_error.stat[0].uvalue += p->ets_packets;
265 c->block_count.stat[0].uvalue += p->ets_packets + p->ts_packets;
266
267 /* ber */
268 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
269 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
270 c->post_bit_error.stat[0].uvalue += p->ber_error_count;
271 c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
272
273 /* Legacy PER/BER */
274 tmp = p->ets_packets * 65535;
275 if (p->ts_packets + p->ets_packets)
276 do_div(tmp, p->ts_packets + p->ets_packets);
277 client->legacy_per = tmp;
278 }
279
280 static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
281 struct sms_stats *p)
282 {
283 struct dvb_frontend *fe = &client->frontend;
284 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
285
286 if (client->prt_dvb_stats)
287 client->prt_dvb_stats(client->debug_data, p);
288
289 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
290
291 /* Update DVB modulation parameters */
292 c->frequency = p->frequency;
293 client->fe_status = sms_to_status(p->is_demod_locked, 0);
294 c->bandwidth_hz = sms_to_bw(p->bandwidth);
295 c->transmission_mode = sms_to_mode(p->transmission_mode);
296 c->guard_interval = sms_to_guard_interval(p->guard_interval);
297 c->code_rate_HP = sms_to_code_rate(p->code_rate);
298 c->code_rate_LP = sms_to_code_rate(p->lp_code_rate);
299 c->hierarchy = sms_to_hierarchy(p->hierarchy);
300 c->modulation = sms_to_modulation(p->constellation);
301
302 /* update reception data */
303 c->lna = p->is_external_lna_on ? 1 : 0;
304
305 /* Carrier to noise ratio, in DB */
306 c->cnr.stat[0].svalue = p->SNR * 1000;
307
308 /* signal Strength, in DBm */
309 c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
310
311 /* PER/BER requires demod lock */
312 if (!p->is_demod_locked)
313 return;
314
315 /* TS PER */
316 client->last_per = c->block_error.stat[0].uvalue;
317 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
318 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
319 c->block_error.stat[0].uvalue += p->error_ts_packets;
320 c->block_count.stat[0].uvalue += p->total_ts_packets;
321
322 /* ber */
323 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
324 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
325 c->post_bit_error.stat[0].uvalue += p->ber_error_count;
326 c->post_bit_count.stat[0].uvalue += p->ber_bit_count;
327
328 /* Legacy PER/BER */
329 client->legacy_ber = p->ber;
330 };
331
332 static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
333 struct sms_isdbt_stats *p)
334 {
335 struct dvb_frontend *fe = &client->frontend;
336 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
337 struct sms_isdbt_layer_stats *lr;
338 int i, n_layers;
339
340 if (client->prt_isdb_stats)
341 client->prt_isdb_stats(client->debug_data, p);
342
343 client->fe_status = sms_to_status(p->is_demod_locked, p->is_rf_locked);
344
345 /*
346 * Firmware 2.1 seems to report only lock status and
347 * signal strength. The signal strength indicator is at the
348 * wrong field.
349 */
350 if (p->statistics_type == 0) {
351 c->strength.stat[0].uvalue = ((s32)p->transmission_mode) * 1000;
352 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
353 return;
354 }
355
356 /* Update ISDB-T transmission parameters */
357 c->frequency = p->frequency;
358 c->bandwidth_hz = sms_to_bw(p->bandwidth);
359 c->transmission_mode = sms_to_mode(p->transmission_mode);
360 c->guard_interval = sms_to_guard_interval(p->guard_interval);
361 c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
362 n_layers = p->num_of_layers;
363 if (n_layers < 1)
364 n_layers = 1;
365 if (n_layers > 3)
366 n_layers = 3;
367 c->isdbt_layer_enabled = 0;
368
369 /* update reception data */
370 c->lna = p->is_external_lna_on ? 1 : 0;
371
372 /* Carrier to noise ratio, in DB */
373 c->cnr.stat[0].svalue = p->SNR * 1000;
374
375 /* signal Strength, in DBm */
376 c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
377
378 /* PER/BER and per-layer stats require demod lock */
379 if (!p->is_demod_locked)
380 return;
381
382 client->last_per = c->block_error.stat[0].uvalue;
383
384 /* Clears global counters, as the code below will sum it again */
385 c->block_error.stat[0].uvalue = 0;
386 c->block_count.stat[0].uvalue = 0;
387 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
388 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
389 c->post_bit_error.stat[0].uvalue = 0;
390 c->post_bit_count.stat[0].uvalue = 0;
391 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
392 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
393
394 for (i = 0; i < n_layers; i++) {
395 lr = &p->layer_info[i];
396
397 /* Update per-layer transmission parameters */
398 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
399 c->isdbt_layer_enabled |= 1 << i;
400 c->layer[i].segment_count = lr->number_of_segments;
401 } else {
402 continue;
403 }
404 c->layer[i].modulation = sms_to_modulation(lr->constellation);
405
406 /* TS PER */
407 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
408 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
409 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
410 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
411
412 /* Update global PER counter */
413 c->block_error.stat[0].uvalue += lr->error_ts_packets;
414 c->block_count.stat[0].uvalue += lr->total_ts_packets;
415
416 /* BER */
417 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
418 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
419 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
420 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
421
422 /* Update global BER counter */
423 c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
424 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
425 }
426 }
427
428 static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
429 struct sms_isdbt_stats_ex *p)
430 {
431 struct dvb_frontend *fe = &client->frontend;
432 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
433 struct sms_isdbt_layer_stats *lr;
434 int i, n_layers;
435
436 if (client->prt_isdb_stats_ex)
437 client->prt_isdb_stats_ex(client->debug_data, p);
438
439 /* Update ISDB-T transmission parameters */
440 c->frequency = p->frequency;
441 client->fe_status = sms_to_status(p->is_demod_locked, 0);
442 c->bandwidth_hz = sms_to_bw(p->bandwidth);
443 c->transmission_mode = sms_to_mode(p->transmission_mode);
444 c->guard_interval = sms_to_guard_interval(p->guard_interval);
445 c->isdbt_partial_reception = p->partial_reception ? 1 : 0;
446 n_layers = p->num_of_layers;
447 if (n_layers < 1)
448 n_layers = 1;
449 if (n_layers > 3)
450 n_layers = 3;
451 c->isdbt_layer_enabled = 0;
452
453 /* update reception data */
454 c->lna = p->is_external_lna_on ? 1 : 0;
455
456 /* Carrier to noise ratio, in DB */
457 c->cnr.stat[0].svalue = p->SNR * 1000;
458
459 /* signal Strength, in DBm */
460 c->strength.stat[0].uvalue = p->in_band_pwr * 1000;
461
462 /* PER/BER and per-layer stats require demod lock */
463 if (!p->is_demod_locked)
464 return;
465
466 client->last_per = c->block_error.stat[0].uvalue;
467
468 /* Clears global counters, as the code below will sum it again */
469 c->block_error.stat[0].uvalue = 0;
470 c->block_count.stat[0].uvalue = 0;
471 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
472 c->block_count.stat[0].scale = FE_SCALE_COUNTER;
473 c->post_bit_error.stat[0].uvalue = 0;
474 c->post_bit_count.stat[0].uvalue = 0;
475 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
476 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
477
478 c->post_bit_error.len = n_layers + 1;
479 c->post_bit_count.len = n_layers + 1;
480 c->block_error.len = n_layers + 1;
481 c->block_count.len = n_layers + 1;
482 for (i = 0; i < n_layers; i++) {
483 lr = &p->layer_info[i];
484
485 /* Update per-layer transmission parameters */
486 if (lr->number_of_segments > 0 && lr->number_of_segments < 13) {
487 c->isdbt_layer_enabled |= 1 << i;
488 c->layer[i].segment_count = lr->number_of_segments;
489 } else {
490 continue;
491 }
492 c->layer[i].modulation = sms_to_modulation(lr->constellation);
493
494 /* TS PER */
495 c->block_error.stat[i + 1].scale = FE_SCALE_COUNTER;
496 c->block_count.stat[i + 1].scale = FE_SCALE_COUNTER;
497 c->block_error.stat[i + 1].uvalue += lr->error_ts_packets;
498 c->block_count.stat[i + 1].uvalue += lr->total_ts_packets;
499
500 /* Update global PER counter */
501 c->block_error.stat[0].uvalue += lr->error_ts_packets;
502 c->block_count.stat[0].uvalue += lr->total_ts_packets;
503
504 /* ber */
505 c->post_bit_error.stat[i + 1].scale = FE_SCALE_COUNTER;
506 c->post_bit_count.stat[i + 1].scale = FE_SCALE_COUNTER;
507 c->post_bit_error.stat[i + 1].uvalue += lr->ber_error_count;
508 c->post_bit_count.stat[i + 1].uvalue += lr->ber_bit_count;
509
510 /* Update global ber counter */
511 c->post_bit_error.stat[0].uvalue += lr->ber_error_count;
512 c->post_bit_count.stat[0].uvalue += lr->ber_bit_count;
513 }
514 }
515
516 static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
517 {
518 struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
519 struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) (((u8 *) cb->p)
520 + cb->offset);
521 void *p = phdr + 1;
522 struct dvb_frontend *fe = &client->frontend;
523 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
524 bool is_status_update = false;
525
526 switch (phdr->msg_type) {
527 case MSG_SMS_DVBT_BDA_DATA:
528 /*
529 * Only feed data to dvb demux if are there any feed listening
530 * to it and if the device has tuned
531 */
532 if (client->feed_users && client->has_tuned)
533 dvb_dmx_swfilter(&client->demux, p,
534 cb->size - sizeof(struct sms_msg_hdr));
535 break;
536
537 case MSG_SMS_RF_TUNE_RES:
538 case MSG_SMS_ISDBT_TUNE_RES:
539 complete(&client->tune_done);
540 break;
541
542 case MSG_SMS_SIGNAL_DETECTED_IND:
543 client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
544 FE_HAS_VITERBI | FE_HAS_SYNC |
545 FE_HAS_LOCK;
546
547 is_status_update = true;
548 break;
549
550 case MSG_SMS_NO_SIGNAL_IND:
551 client->fe_status = 0;
552
553 is_status_update = true;
554 break;
555
556 case MSG_SMS_TRANSMISSION_IND:
557 smsdvb_update_tx_params(client, p);
558
559 is_status_update = true;
560 break;
561
562 case MSG_SMS_HO_PER_SLICES_IND:
563 smsdvb_update_per_slices(client, p);
564
565 is_status_update = true;
566 break;
567
568 case MSG_SMS_GET_STATISTICS_RES:
569 switch (smscore_get_device_mode(client->coredev)) {
570 case DEVICE_MODE_ISDBT:
571 case DEVICE_MODE_ISDBT_BDA:
572 smsdvb_update_isdbt_stats(client, p);
573 break;
574 default:
575 /* Skip sms_msg_statistics_info:request_result field */
576 smsdvb_update_dvb_stats(client, p + sizeof(u32));
577 }
578
579 is_status_update = true;
580 break;
581
582 /* Only for ISDB-T */
583 case MSG_SMS_GET_STATISTICS_EX_RES:
584 /* Skip sms_msg_statistics_info:request_result field? */
585 smsdvb_update_isdbt_stats_ex(client, p + sizeof(u32));
586 is_status_update = true;
587 break;
588 default:
589 pr_debug("message not handled\n");
590 }
591 smscore_putbuffer(client->coredev, cb);
592
593 if (is_status_update) {
594 if (client->fe_status & FE_HAS_LOCK) {
595 sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
596 if (client->last_per == c->block_error.stat[0].uvalue)
597 sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
598 else
599 sms_board_dvb3_event(client, DVB3_EVENT_UNC_ERR);
600 client->has_tuned = true;
601 } else {
602 smsdvb_stats_not_ready(fe);
603 client->has_tuned = false;
604 sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
605 }
606 complete(&client->stats_done);
607 }
608
609 return 0;
610 }
611
612 static void smsdvb_media_device_unregister(struct smsdvb_client_t *client)
613 {
614 #ifdef CONFIG_MEDIA_CONTROLLER_DVB
615 struct smscore_device_t *coredev = client->coredev;
616
617 if (!coredev->media_dev)
618 return;
619 media_device_unregister(coredev->media_dev);
620 media_device_cleanup(coredev->media_dev);
621 kfree(coredev->media_dev);
622 coredev->media_dev = NULL;
623 #endif
624 }
625
626 static void smsdvb_unregister_client(struct smsdvb_client_t *client)
627 {
628 /* must be called under clientslock */
629
630 list_del(&client->entry);
631
632 smsdvb_debugfs_release(client);
633 smscore_unregister_client(client->smsclient);
634 dvb_unregister_frontend(&client->frontend);
635 dvb_dmxdev_release(&client->dmxdev);
636 dvb_dmx_release(&client->demux);
637 smsdvb_media_device_unregister(client);
638 dvb_unregister_adapter(&client->adapter);
639 kfree(client);
640 }
641
642 static void smsdvb_onremove(void *context)
643 {
644 kmutex_lock(&g_smsdvb_clientslock);
645
646 smsdvb_unregister_client((struct smsdvb_client_t *) context);
647
648 kmutex_unlock(&g_smsdvb_clientslock);
649 }
650
651 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
652 {
653 struct smsdvb_client_t *client =
654 container_of(feed->demux, struct smsdvb_client_t, demux);
655 struct sms_msg_data pid_msg;
656
657 pr_debug("add pid %d(%x)\n",
658 feed->pid, feed->pid);
659
660 client->feed_users++;
661
662 pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
663 pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
664 pid_msg.x_msg_header.msg_flags = 0;
665 pid_msg.x_msg_header.msg_type = MSG_SMS_ADD_PID_FILTER_REQ;
666 pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
667 pid_msg.msg_data[0] = feed->pid;
668
669 return smsclient_sendrequest(client->smsclient,
670 &pid_msg, sizeof(pid_msg));
671 }
672
673 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
674 {
675 struct smsdvb_client_t *client =
676 container_of(feed->demux, struct smsdvb_client_t, demux);
677 struct sms_msg_data pid_msg;
678
679 pr_debug("remove pid %d(%x)\n",
680 feed->pid, feed->pid);
681
682 client->feed_users--;
683
684 pid_msg.x_msg_header.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
685 pid_msg.x_msg_header.msg_dst_id = HIF_TASK;
686 pid_msg.x_msg_header.msg_flags = 0;
687 pid_msg.x_msg_header.msg_type = MSG_SMS_REMOVE_PID_FILTER_REQ;
688 pid_msg.x_msg_header.msg_length = sizeof(pid_msg);
689 pid_msg.msg_data[0] = feed->pid;
690
691 return smsclient_sendrequest(client->smsclient,
692 &pid_msg, sizeof(pid_msg));
693 }
694
695 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
696 void *buffer, size_t size,
697 struct completion *completion)
698 {
699 int rc;
700
701 rc = smsclient_sendrequest(client->smsclient, buffer, size);
702 if (rc < 0)
703 return rc;
704
705 return wait_for_completion_timeout(completion,
706 msecs_to_jiffies(2000)) ?
707 0 : -ETIME;
708 }
709
710 static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
711 {
712 int rc;
713 struct sms_msg_hdr msg;
714
715 /* Don't request stats too fast */
716 if (client->get_stats_jiffies &&
717 (!time_after(jiffies, client->get_stats_jiffies)))
718 return 0;
719 client->get_stats_jiffies = jiffies + msecs_to_jiffies(100);
720
721 msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
722 msg.msg_dst_id = HIF_TASK;
723 msg.msg_flags = 0;
724 msg.msg_length = sizeof(msg);
725
726 switch (smscore_get_device_mode(client->coredev)) {
727 case DEVICE_MODE_ISDBT:
728 case DEVICE_MODE_ISDBT_BDA:
729 /*
730 * Check for firmware version, to avoid breaking for old cards
731 */
732 if (client->coredev->fw_version >= 0x800)
733 msg.msg_type = MSG_SMS_GET_STATISTICS_EX_REQ;
734 else
735 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
736 break;
737 default:
738 msg.msg_type = MSG_SMS_GET_STATISTICS_REQ;
739 }
740
741 rc = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
742 &client->stats_done);
743
744 return rc;
745 }
746
747 static inline int led_feedback(struct smsdvb_client_t *client)
748 {
749 if (!(client->fe_status & FE_HAS_LOCK))
750 return sms_board_led_feedback(client->coredev, SMS_LED_OFF);
751
752 return sms_board_led_feedback(client->coredev,
753 (client->legacy_ber == 0) ?
754 SMS_LED_HI : SMS_LED_LO);
755 }
756
757 static int smsdvb_read_status(struct dvb_frontend *fe, enum fe_status *stat)
758 {
759 int rc;
760 struct smsdvb_client_t *client;
761 client = container_of(fe, struct smsdvb_client_t, frontend);
762
763 rc = smsdvb_send_statistics_request(client);
764
765 *stat = client->fe_status;
766
767 led_feedback(client);
768
769 return rc;
770 }
771
772 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
773 {
774 int rc;
775 struct smsdvb_client_t *client;
776
777 client = container_of(fe, struct smsdvb_client_t, frontend);
778
779 rc = smsdvb_send_statistics_request(client);
780
781 *ber = client->legacy_ber;
782
783 led_feedback(client);
784
785 return rc;
786 }
787
788 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
789 {
790 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
791 int rc;
792 s32 power = (s32) c->strength.stat[0].uvalue;
793 struct smsdvb_client_t *client;
794
795 client = container_of(fe, struct smsdvb_client_t, frontend);
796
797 rc = smsdvb_send_statistics_request(client);
798
799 if (power < -95)
800 *strength = 0;
801 else if (power > -29)
802 *strength = 65535;
803 else
804 *strength = (power + 95) * 65535 / 66;
805
806 led_feedback(client);
807
808 return rc;
809 }
810
811 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
812 {
813 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
814 int rc;
815 struct smsdvb_client_t *client;
816
817 client = container_of(fe, struct smsdvb_client_t, frontend);
818
819 rc = smsdvb_send_statistics_request(client);
820
821 /* Preferred scale for SNR with legacy API: 0.1 dB */
822 *snr = ((u32)c->cnr.stat[0].svalue) / 100;
823
824 led_feedback(client);
825
826 return rc;
827 }
828
829 static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
830 {
831 int rc;
832 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
833 struct smsdvb_client_t *client;
834
835 client = container_of(fe, struct smsdvb_client_t, frontend);
836
837 rc = smsdvb_send_statistics_request(client);
838
839 *ucblocks = c->block_error.stat[0].uvalue;
840
841 led_feedback(client);
842
843 return rc;
844 }
845
846 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
847 struct dvb_frontend_tune_settings *tune)
848 {
849 pr_debug("\n");
850
851 tune->min_delay_ms = 400;
852 tune->step_size = 250000;
853 tune->max_drift = 0;
854 return 0;
855 }
856
857 static int smsdvb_dvbt_set_frontend(struct dvb_frontend *fe)
858 {
859 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
860 struct smsdvb_client_t *client =
861 container_of(fe, struct smsdvb_client_t, frontend);
862
863 struct {
864 struct sms_msg_hdr msg;
865 u32 Data[3];
866 } msg;
867
868 int ret;
869
870 client->fe_status = 0;
871 client->event_fe_state = -1;
872 client->event_unc_state = -1;
873 fe->dtv_property_cache.delivery_system = SYS_DVBT;
874
875 msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
876 msg.msg.msg_dst_id = HIF_TASK;
877 msg.msg.msg_flags = 0;
878 msg.msg.msg_type = MSG_SMS_RF_TUNE_REQ;
879 msg.msg.msg_length = sizeof(msg);
880 msg.Data[0] = c->frequency;
881 msg.Data[2] = 12000000;
882
883 pr_debug("%s: freq %d band %d\n", __func__, c->frequency,
884 c->bandwidth_hz);
885
886 switch (c->bandwidth_hz / 1000000) {
887 case 8:
888 msg.Data[1] = BW_8_MHZ;
889 break;
890 case 7:
891 msg.Data[1] = BW_7_MHZ;
892 break;
893 case 6:
894 msg.Data[1] = BW_6_MHZ;
895 break;
896 case 0:
897 return -EOPNOTSUPP;
898 default:
899 return -EINVAL;
900 }
901 /* Disable LNA, if any. An error is returned if no LNA is present */
902 ret = sms_board_lna_control(client->coredev, 0);
903 if (ret == 0) {
904 enum fe_status status;
905
906 /* tune with LNA off at first */
907 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
908 &client->tune_done);
909
910 smsdvb_read_status(fe, &status);
911
912 if (status & FE_HAS_LOCK)
913 return ret;
914
915 /* previous tune didn't lock - enable LNA and tune again */
916 sms_board_lna_control(client->coredev, 1);
917 }
918
919 return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
920 &client->tune_done);
921 }
922
923 static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
924 {
925 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
926 struct smsdvb_client_t *client =
927 container_of(fe, struct smsdvb_client_t, frontend);
928 int board_id = smscore_get_board_id(client->coredev);
929 struct sms_board *board = sms_get_board(board_id);
930 enum sms_device_type_st type = board->type;
931 int ret;
932
933 struct {
934 struct sms_msg_hdr msg;
935 u32 Data[4];
936 } msg;
937
938 fe->dtv_property_cache.delivery_system = SYS_ISDBT;
939
940 msg.msg.msg_src_id = DVBT_BDA_CONTROL_MSG_ID;
941 msg.msg.msg_dst_id = HIF_TASK;
942 msg.msg.msg_flags = 0;
943 msg.msg.msg_type = MSG_SMS_ISDBT_TUNE_REQ;
944 msg.msg.msg_length = sizeof(msg);
945
946 if (c->isdbt_sb_segment_idx == -1)
947 c->isdbt_sb_segment_idx = 0;
948
949 if (!c->isdbt_layer_enabled)
950 c->isdbt_layer_enabled = 7;
951
952 msg.Data[0] = c->frequency;
953 msg.Data[1] = BW_ISDBT_1SEG;
954 msg.Data[2] = 12000000;
955 msg.Data[3] = c->isdbt_sb_segment_idx;
956
957 if (c->isdbt_partial_reception) {
958 if ((type == SMS_PELE || type == SMS_RIO) &&
959 c->isdbt_sb_segment_count > 3)
960 msg.Data[1] = BW_ISDBT_13SEG;
961 else if (c->isdbt_sb_segment_count > 1)
962 msg.Data[1] = BW_ISDBT_3SEG;
963 } else if (type == SMS_PELE || type == SMS_RIO)
964 msg.Data[1] = BW_ISDBT_13SEG;
965
966 c->bandwidth_hz = 6000000;
967
968 pr_debug("freq %d segwidth %d segindex %d\n",
969 c->frequency, c->isdbt_sb_segment_count,
970 c->isdbt_sb_segment_idx);
971
972 /* Disable LNA, if any. An error is returned if no LNA is present */
973 ret = sms_board_lna_control(client->coredev, 0);
974 if (ret == 0) {
975 enum fe_status status;
976
977 /* tune with LNA off at first */
978 ret = smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
979 &client->tune_done);
980
981 smsdvb_read_status(fe, &status);
982
983 if (status & FE_HAS_LOCK)
984 return ret;
985
986 /* previous tune didn't lock - enable LNA and tune again */
987 sms_board_lna_control(client->coredev, 1);
988 }
989 return smsdvb_sendrequest_and_wait(client, &msg, sizeof(msg),
990 &client->tune_done);
991 }
992
993 static int smsdvb_set_frontend(struct dvb_frontend *fe)
994 {
995 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
996 struct smsdvb_client_t *client =
997 container_of(fe, struct smsdvb_client_t, frontend);
998 struct smscore_device_t *coredev = client->coredev;
999
1000 smsdvb_stats_not_ready(fe);
1001 c->strength.stat[0].uvalue = 0;
1002 c->cnr.stat[0].uvalue = 0;
1003
1004 client->has_tuned = false;
1005
1006 switch (smscore_get_device_mode(coredev)) {
1007 case DEVICE_MODE_DVBT:
1008 case DEVICE_MODE_DVBT_BDA:
1009 return smsdvb_dvbt_set_frontend(fe);
1010 case DEVICE_MODE_ISDBT:
1011 case DEVICE_MODE_ISDBT_BDA:
1012 return smsdvb_isdbt_set_frontend(fe);
1013 default:
1014 return -EINVAL;
1015 }
1016 }
1017
1018 static int smsdvb_init(struct dvb_frontend *fe)
1019 {
1020 struct smsdvb_client_t *client =
1021 container_of(fe, struct smsdvb_client_t, frontend);
1022
1023 sms_board_power(client->coredev, 1);
1024
1025 sms_board_dvb3_event(client, DVB3_EVENT_INIT);
1026 return 0;
1027 }
1028
1029 static int smsdvb_sleep(struct dvb_frontend *fe)
1030 {
1031 struct smsdvb_client_t *client =
1032 container_of(fe, struct smsdvb_client_t, frontend);
1033
1034 sms_board_led_feedback(client->coredev, SMS_LED_OFF);
1035 sms_board_power(client->coredev, 0);
1036
1037 sms_board_dvb3_event(client, DVB3_EVENT_SLEEP);
1038
1039 return 0;
1040 }
1041
1042 static void smsdvb_release(struct dvb_frontend *fe)
1043 {
1044 /* do nothing */
1045 }
1046
1047 static struct dvb_frontend_ops smsdvb_fe_ops = {
1048 .info = {
1049 .name = "Siano Mobile Digital MDTV Receiver",
1050 .frequency_min = 44250000,
1051 .frequency_max = 867250000,
1052 .frequency_stepsize = 250000,
1053 .caps = FE_CAN_INVERSION_AUTO |
1054 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
1055 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
1056 FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
1057 FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
1058 FE_CAN_GUARD_INTERVAL_AUTO |
1059 FE_CAN_RECOVER |
1060 FE_CAN_HIERARCHY_AUTO,
1061 },
1062
1063 .release = smsdvb_release,
1064
1065 .set_frontend = smsdvb_set_frontend,
1066 .get_tune_settings = smsdvb_get_tune_settings,
1067
1068 .read_status = smsdvb_read_status,
1069 .read_ber = smsdvb_read_ber,
1070 .read_signal_strength = smsdvb_read_signal_strength,
1071 .read_snr = smsdvb_read_snr,
1072 .read_ucblocks = smsdvb_read_ucblocks,
1073
1074 .init = smsdvb_init,
1075 .sleep = smsdvb_sleep,
1076 };
1077
1078 static int smsdvb_hotplug(struct smscore_device_t *coredev,
1079 struct device *device, int arrival)
1080 {
1081 struct smsclient_params_t params;
1082 struct smsdvb_client_t *client;
1083 int rc;
1084
1085 /* device removal handled by onremove callback */
1086 if (!arrival)
1087 return 0;
1088 client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
1089 if (!client)
1090 return -ENOMEM;
1091
1092 /* register dvb adapter */
1093 rc = dvb_register_adapter(&client->adapter,
1094 sms_get_board(
1095 smscore_get_board_id(coredev))->name,
1096 THIS_MODULE, device, adapter_nr);
1097 if (rc < 0) {
1098 pr_err("dvb_register_adapter() failed %d\n", rc);
1099 goto adapter_error;
1100 }
1101 dvb_register_media_controller(&client->adapter, coredev->media_dev);
1102
1103 /* init dvb demux */
1104 client->demux.dmx.capabilities = DMX_TS_FILTERING;
1105 client->demux.filternum = 32; /* todo: nova ??? */
1106 client->demux.feednum = 32;
1107 client->demux.start_feed = smsdvb_start_feed;
1108 client->demux.stop_feed = smsdvb_stop_feed;
1109
1110 rc = dvb_dmx_init(&client->demux);
1111 if (rc < 0) {
1112 pr_err("dvb_dmx_init failed %d\n", rc);
1113 goto dvbdmx_error;
1114 }
1115
1116 /* init dmxdev */
1117 client->dmxdev.filternum = 32;
1118 client->dmxdev.demux = &client->demux.dmx;
1119 client->dmxdev.capabilities = 0;
1120
1121 rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
1122 if (rc < 0) {
1123 pr_err("dvb_dmxdev_init failed %d\n", rc);
1124 goto dmxdev_error;
1125 }
1126
1127 /* init and register frontend */
1128 memcpy(&client->frontend.ops, &smsdvb_fe_ops,
1129 sizeof(struct dvb_frontend_ops));
1130
1131 switch (smscore_get_device_mode(coredev)) {
1132 case DEVICE_MODE_DVBT:
1133 case DEVICE_MODE_DVBT_BDA:
1134 client->frontend.ops.delsys[0] = SYS_DVBT;
1135 break;
1136 case DEVICE_MODE_ISDBT:
1137 case DEVICE_MODE_ISDBT_BDA:
1138 client->frontend.ops.delsys[0] = SYS_ISDBT;
1139 break;
1140 }
1141
1142 rc = dvb_register_frontend(&client->adapter, &client->frontend);
1143 if (rc < 0) {
1144 pr_err("frontend registration failed %d\n", rc);
1145 goto frontend_error;
1146 }
1147
1148 params.initial_id = 1;
1149 params.data_type = MSG_SMS_DVBT_BDA_DATA;
1150 params.onresponse_handler = smsdvb_onresponse;
1151 params.onremove_handler = smsdvb_onremove;
1152 params.context = client;
1153
1154 rc = smscore_register_client(coredev, &params, &client->smsclient);
1155 if (rc < 0) {
1156 pr_err("smscore_register_client() failed %d\n", rc);
1157 goto client_error;
1158 }
1159
1160 client->coredev = coredev;
1161
1162 init_completion(&client->tune_done);
1163 init_completion(&client->stats_done);
1164
1165 kmutex_lock(&g_smsdvb_clientslock);
1166
1167 list_add(&client->entry, &g_smsdvb_clients);
1168
1169 kmutex_unlock(&g_smsdvb_clientslock);
1170
1171 client->event_fe_state = -1;
1172 client->event_unc_state = -1;
1173 sms_board_dvb3_event(client, DVB3_EVENT_HOTPLUG);
1174
1175 sms_board_setup(coredev);
1176
1177 if (smsdvb_debugfs_create(client) < 0)
1178 pr_info("failed to create debugfs node\n");
1179
1180 rc = dvb_create_media_graph(&client->adapter, true);
1181 if (rc < 0) {
1182 pr_err("dvb_create_media_graph failed %d\n", rc);
1183 goto client_error;
1184 }
1185
1186 pr_info("DVB interface registered.\n");
1187 return 0;
1188
1189 client_error:
1190 dvb_unregister_frontend(&client->frontend);
1191
1192 frontend_error:
1193 dvb_dmxdev_release(&client->dmxdev);
1194
1195 dmxdev_error:
1196 dvb_dmx_release(&client->demux);
1197
1198 dvbdmx_error:
1199 smsdvb_media_device_unregister(client);
1200 dvb_unregister_adapter(&client->adapter);
1201
1202 adapter_error:
1203 kfree(client);
1204 return rc;
1205 }
1206
1207 static int __init smsdvb_module_init(void)
1208 {
1209 int rc;
1210
1211 INIT_LIST_HEAD(&g_smsdvb_clients);
1212 kmutex_init(&g_smsdvb_clientslock);
1213
1214 smsdvb_debugfs_register();
1215
1216 rc = smscore_register_hotplug(smsdvb_hotplug);
1217
1218 pr_debug("\n");
1219
1220 return rc;
1221 }
1222
1223 static void __exit smsdvb_module_exit(void)
1224 {
1225 smscore_unregister_hotplug(smsdvb_hotplug);
1226
1227 kmutex_lock(&g_smsdvb_clientslock);
1228
1229 while (!list_empty(&g_smsdvb_clients))
1230 smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next);
1231
1232 smsdvb_debugfs_unregister();
1233
1234 kmutex_unlock(&g_smsdvb_clientslock);
1235 }
1236
1237 module_init(smsdvb_module_init);
1238 module_exit(smsdvb_module_exit);
1239
1240 MODULE_DESCRIPTION("SMS DVB subsystem adaptation module");
1241 MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)");
1242 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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